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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Bulletin of Electrical Engineering and Informatics JOIV : International Journal on Informatics Visualization Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Journal of Applied Science, Engineering, Technology, and Education
Faizal Arya Samman
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Public Health Other

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Experimental Investigation of Bow Slamming on a Ship: The Effect of Weight and Impact Angle Baso, Suandar; Himaya, Andi Nadia; Samman, Faizal Arya; Anggriani, Andi Dian Eka; Rosmani, Rosmani
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 1 (2021): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i1.35663

Abstract

The impact pressure induced by slamming can imply physical damage on a ship. The high probability of the slamming impact is on the bow part in the actual sea state. In this present study, the slamming induced pressure on the bow flare of a ship have been investigated through the experiment. The experiment was schemed by the dropping test based on free-falling body in the wave tank, wherein the bow of the ship model was inclined in several impact angles 0° to 30° to the free-water surface. To measure slamming impact pressure acting on the bow flare, the piezoelectric sensors S1, S2, S3, S4 were attached to the bow section and installed on a computer. As the obtained results, the impact pressure on bow flare occurred in a short time duration caused by slamming. The discrepancy of the peak impact pressure between ship model weight of 2.42 kg and 7.29 kg for the impact angle 0° is 70.36% S1, 69.52% S2, 68.97% S3, and 68.34% S4. For the relative impact angle of 30°, the discrepancy is 67.02% S1, 65.73% S2, 58.51% S3, and 48.21% S4. The tendency of the peak pressure coefficient at the sequenced impact points S1, S2, S3, S4 is similar for all impact angles 0°, 10°, 20°, and 30°. The peak pressure coefficient due to the full load condition is highest in the nearest bottom part, and the peak pressure coefficients due to the lightship condition highest in the nearest bottom part caused by the small impact angle.
Pelatihan Pemeriksaan Instalasi Tenaga Listrik pada Tenaga Inspektur sesuai Kepmen DJK ESDM di PT. Rekayasa Daya Energi Salama Manjang; Ikhlas Kitta; Sri Mawar Said; Yusri Yusri; Faizal Arya Samman; Yustinus Sombolayuk; Indar C Gunadin; Gassing Gassing
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 4 No 1 (2021): Kesadaran Sosial dalam Memperkuat Kehidupan Masyarakat dalam Era Pandemi
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v4i1.156

Abstract

This community service activity aims to build a cooperative relationship between Electrical Engineering Department of Hasanuddin University and company partners in South Sulawesi. One of the company partners engaged in the engineering inspection agency, namely PT. Rekayasa Daya Energi, where some of partner problems are not having experts who have certificates of competence and experience as well as professional expertise in their respective fields, both as permanent and non-permanent experts as field inspectors to meet the requirements required by the Ministry of Energy and Mineral Resources, as the person in charge of Engineering and as a certified Electricity Engineering Personnel inspection in the field of electrical installations. For this reason, knowledge from inspectors is needed to master this field practically which requires a refresher on work competence in the field of electrical power installation inspection. This activity provides training, including inspection techniques for power plant installations, inspection techniques for substation installations and electric power transmission, inspection techniques for electric power distribution installations, and inspection techniques for electrical power utilization installations. The preparation process for the implementation of the training begins by coordinating with potential young workers who are coordinated by partners who are represented through a business entity, namely PT. Energy Engineering is related to the schedule, participants and materials to be given during the training. The implementation team then made several training modules in the form of softcopy as the main training material. Electricity installation inspection training was held for 1 (one) day on 3 September 2020, which was attended by 15 inspectors.
Pengenalan Panel Surya sebagai Salah Satu Sumber Energi Terbarukan untuk Pembelajaran di SMA Negeri 1 Takalar Fitriyanti Mayasari; Faizal Arya Samman; Zaenab Muslimin; Tajuddin Waris; Dewiani Dewiani; A. Ejah Umraeni Salam; Indar Chaerah Gunadin; Intan Sari Areni; Yusri Syam Akil; Ida Rachmaniar Sahali; Azran Budi Arief
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 5 No 2 (2022): Mengembangkan Kehiodupan Masyarakat melalui Kesatuan dan Kekuatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v5i2.271

Abstract

The rapid development of technology, the trend that leads to the green earth movement and the encouragement of the use of new and renewable energy (EBT) by the government, have become the basis for the importance of introducing small-scale EBT generation equipment to the society, especially to students. Solar energy is one the source of renewable energy that has considerable potential and is spread evenly in Indonesia. Solar Panels as the main component of Solar Power Plants (PLTS) have qualified and advanced technology. The application has been widely used by both industry and urban communities. This activity was carried out by the Department of Electrical Engineering Unhas to introduce solar panels as a source of EBT to high school students of SMA Negeri 1 Takalar, Pattalassang Subdistrict, Takalar Regency through outreach activities. By this activity, the students will have an understanding of the basic principles, components of small-scale PV and its latest technology. This activity also produces a small-scale PLTS module which will be given to SMA Negeri 1 Takalar, in order for continuous learning can be carried out. To measure the level of success of the activity, pre- and post-activity assessments were conducted in the form of a questionnaire to students with parameters related to the basic understanding of PLTS. The results of the quantitative analysis of the questionnaire showed an increase in the level of student understanding reaching 44-56% after the service activities were carried out. Therefore, this activity gives the expected results.
Pengenalan dan Penggunaan Instrumen Pengukuran untuk Meningkatkan Kompetensi Pengujian dan Pemeriksanaan Instalasi Listrik pada Siswa SMK Neg. 4 Kabupaten Gowa Mayasari, Fitriyanti; Samman, Faizal Arya; Suyuti, Ansar; Akil, Yusri Syam; ., Dewiani; Salam, A. Ejah Umraeni; Gunadin, Indar Chaerah; Anshar, Muh; Said, Sri Mawar; ., Yusran
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 2 (2023): Let us Collaborate for Community Issues
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i2.417

Abstract

Sumber daya manusia (SDM) merupakan salah satu penggerak perekonomian, sehingga perkembangan SDM senantiasa dibutuhkan, khususnya peningkatan SDM sejak dini dari tingkat siswa/pelajar. Siswa Sekolah Menengah Kejuruan (SMK) yang sejak awal telah memilih bidang keahlian/keilmuan akan dihadapkan oleh Uji Kompetensi Keahlian (UKK) dan kualifikasi kompetensi sesuai jenis pekerjaan pada bidang keilmuannya. Kegiatan Pengabdian kepada Masyarakat (PkM) oleh Departemen Teknik Elektro, FT Unhas bertujuan untuk memberikan pengenalan dan pemahaman terkait penggunaan instrumen pengukuran untuk mempersiapkan siswa SMK dalam menghadapi UKK dan meningkatkan kualifikasi kompetensi bidang ketenagalistrikan, khususnya pengujian dan pemeriksaan instalasi listrik. Hal ini merupakan solusi atas permasalahan yang terjadi pada mitra pengabdian, yaitu SMK Neg. 4 Gowa, dengan keterbatasan instrumen pengukuran. Bentuk kegiatan PkM adalah pelatihan penggunaan instrumen alat ukur tahanan isolasi, tahanan pembumian, Total Harmonic Distortion (THD) dan besaran listrik lainnya, seperti arus, tegangan dan daya. Hasil analisis kuantitatif pengukuran pre-test (sebelum pelatihan) dan post-test (setelah pelatihan) diperoleh kenaikan tingkat pemahaman siswa terkait instrumen pengukuran berkisar 63 – 91% dari cukup paham hingga paham terhadap terhadap topik ini dibandingkan dengan kondisi sebelum pelatihan. Parameter pengukuran tahanan isolasi memiliki kenaikan yang cukup signifikan, karena sebelum kegiatan dilakukan, 100% siswa tidak memahami parameter ini, namun setelah dilakukan pelatihan, terjadi peningkatan 65% siswa cukup paham dan 4% siswa paham. Hal ini mengindikasikan bahwa kegiatan ini telah mencapai sasaran yang telah diharapkan oleh tim
Autonomous vehicle tracking control for a curved trajectory Hasan, Hasnawiya; Samman, Faizal Arya; Anshar, Muh; Sadjad, Rhiza S.
Bulletin of Electrical Engineering and Informatics Vol 13, No 3: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v13i3.6060

Abstract

Recently, research about trajectory tracking of autonomous vehicles has significantly contributed to the development of autonomous vehicle technology, particularly with novel control methods. However, tracking a curved trajectory is still a challenge for autonomous vehicles. This research proposes a state feedback linearization with observer feedback to overcome some difficulties arising from such a path. This approach suits a complex nonlinear system such as an autonomous vehicle. This method also has been compared with the linear-quadratic regulator (LQR) method. So, the goal of this research is to improve the control system performance of autonomous vehicles that are stable enough to navigate a curved path. Moreover, the study shows that the developed control law can track the curved path and solve existing problems. However, improvements are still necessary for the vehicle's performance and robustness.
Design of Quantized Deep Neural Network Hardware Inference Accelerator Using Systolic Architecture Rifqie, Dary Mochamad; Djawad, Yasser Abd.; Samman, Faizal Arya; Ahmar, Ansari Saleh; Fakhri, M. Miftach
Journal of Applied Science, Engineering, Technology, and Education Vol. 6 No. 1 (2024)
Publisher : PT Mattawang Mediatama Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.asci2689

Abstract

This paper presents a hardware inference accelerator architecture of quantized deep neural networks (DNN). The proposed accelerator implements all computation in a quantize version of DNN including linear transformations like matrix multiplications, nonlinear activation functions such as ReLU, quantization and dequantization operation. The hardware accelerator of quantized DNN consists of matrix multiplication core which is implemented in systolic array architecture, and the QDR core for computing the operation of quantization, dequantization, and ReLU. This proposed hardware architecture is implemented in Verilog Hardware Description Language (HDL) code using modelsim. To validate, we simulated the quantized DNN using Python programming language and compared the results with our proposed hardware accelerator. The result of this comparison shows a very slight difference, confirming the validity of our quantized DNN hardware accelerator.
Perakitan Sistem WECG IoT dan Diseminasi Unjuk Kinerja untuk Memperkuat Sistem Layanan Kesehatan Puskesmas Kitta, Ikhlas; Palantei, Elyas; Suyuti, Ansar; Manjang, Salama; Samman, Faizal Arya; Nappu, Muhammad Bahtiar; Arief, Ardiaty; Said, Sri Mawar; ., Gassing; Gunadin, Indar Chaerah; ., Hasniaty; Adil, Andi Eri Andika; Palantei, Idris
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 1 (2025): Community Empowerment through Higher Education Community Service Programs
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i1.555

Abstract

This community service program is focused on a number of issues such as the implementation of the wireless ECG device design and the dissemination and demonstration of its technical operations in a such manner to all participants, e.g. the activists and supporters of the sub-village community healthcare center (PUSTU) located in Malimongeng Village, Salomekko District, Bone Regency. Several models of the latest WECG devices and the latest innovations have been developed and produced independently on the UNHAS campus, both hardware and software components. This Electrocardiogram (ECG) functions to monitor the condition of heart health and blood pressure in each patient who has been fitted with an ECG device. Each wireless ECG device is connected by an internet network and integrated at once in 1 Website that displays ECG signal graphics so that it can be monitored and controlled in real time from a distance. The application of ECG is very necessary for nurses or medical teams in a health institution to facilitate the control of the condition of patients in the room without having to walk back and forth to check the condition of patients being treated. The implementation of this community service is divided into 2 stages, namely the dissemination stage of basic knowledge of ECG technology and the technical training stage for operating ECG devices to support the patient condition control system at the health center. The results of recording the level of knowledge and understanding of the Malimongeng Village community who participated in community service activities carried out by a team of researchers and inventors from the Department of Electrical Engineering, Faculty of Engineering, Hasanuddin University were documented using the Googleform questionnaire application which had been designed earlier before the implementation of the activity in such a way as to measure the level of success of the implementation of the 2024 PKM program. The questionnaire survey was distributed and filled out by PKM participants online, both before and after the provision of material. After the implementation of the dissemination agenda and demonstration of the operation of the IoT WECG technology device, there was an increase in the knowledge and general understanding of the Malimongeng Village community who participated in the LBE Excellent Collaboration community service program in 2024 in both aspects of the category, namely general knowledge of health science and technical matters related to the development and production of IoT WECG devices along with their direct application in the midst of community life. The influence of participation in the series of PKM activities on both aspects of the target of counseling/socialization resulted in an increase in the capacity of knowledge in the community, namely around 30 percent and 25 percent respectively. Aspects of Technology Benefits and Activities, Based on the recommendations and input of all PKM activity participants, the following issues are highly expected by the Malimongeng Village community, including: aspects of the quality and diversity of cutting-edge science should be formulated to be more interesting and increase the insight of the village community, aspects of the availability of more sophisticated health devices should and should be equipped as soon as possible with more sophisticated and modern health infrastructure and facilities in the village and aspects of sustainability of research and development and production to overcome the problem of the availability of health facilities in the village and nationally.
Enhancing Relational Database Efficiency through Algorithmic Query Tuning in Virtual Memory Systems Yulis, Nurlina; Ilham, Amil Ahmad; Achmad, Andani; Samman, Faizal Arya
JOIV : International Journal on Informatics Visualization Vol 9, No 4 (2025)
Publisher : Society of Visual Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/joiv.9.4.2850

Abstract

The rapid evolution of virtual memory-based relational database systems has significantly advanced data processing capabilities. However, the efficiency of these systems largely depends on query execution optimization, which can be enhanced through algorithmic query tuning techniques. This study investigates the impact of these techniques on enhancing query performance in virtual memory-based relational databases. Various algorithmic methods were analyzed to optimize query execution plans, with a focus on key performance indicators such as execution time, CPU and memory usage, disk I/O, and cache hit ratio. The systematic application of these methods revealed effective strategies for performance enhancement. Results show substantial improvements in execution time, resource utilization, and scalability. This work offers valuable insights for database administrators and system architects, highlighting the role of algorithmic query tuning in managing the growing demands for data processing. Future research endeavors should explore the realm of AI-driven automation, with a particular focus on enhancing query optimization techniques. Additionally, there is a pressing need to investigate advanced security measures that safeguard data integrity within expansive, large-scale systems. By adopting innovative approaches, we can ensure robust protection and efficient performance in an increasingly data-driven world.
Design and simulation of an electric vehicle charging system with battery arrangement and control parameters optimization Pasra, Nurmiati; Samman, Faizal Arya; Achmad, Andani; Yusran, Yusran
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i4.pp2521-2537

Abstract

The development of electric vehicle (EV) charging technology requires efficient, reliable, and economical systems to address users' concerns about battery drain. This study presents a simplification of EV charger design with an isolated model and optimal battery mode setting. The research method integrates step-up Y-Δ transformers, AC-DC converters, boost DC-DC converters, integral proportional control, and battery configurations. Series (S) - parallel (P) - series (S) battery arrangement pattern to maximize system performance. The test results using a 130 mF capacitor with the S40-P2-S6 and S80-P2-S3 array patterns produced an output voltage of 946 V, while the S100-P2-S3 array pattern achieved an output voltage of 1,182 V. The system is capable of fast charging with a time of 0.2 to 2 hours for a battery capacity of 30 to 100 kWh at a charging power of 50 to 150 kW with an efficiency of up to 97%. The combination of the use of an isolated model on the charger array and the EV battery setting pattern is proven to produce stable voltage values with minimal overshoot levels, thus addressing the complex charger design challenges and battery setting needs in the 800 to 1,100 V voltage range.
Co-Authors ., Dewiani ., Yusran A. Ejah Umraeni Salam Adil, Andi Eri Andika Ahmad, Rizkiyanti Ahmar, Ansari Saleh Akil, Yusri Syam Amil Ahmad Ilham Andani Achmad Anggriani, Andi Dian Eka Ansar Suyuti Anshar, Muh Arief, Ardiaty Azran Budi Arief Dary Mochamad Rifqie Dewiani Dewiani Djawad, Yasser Abd. Fitriyanti Mayasari Gassing . Gassing Gassing Gunadin, Indar Chaerah Hasanuddin, Zulfajri Basri Hasnawiya Hasan Hasniaty Himawan, A. Agung Femin Himaya, Andi Nadia Ida Rachmaniar Sahali Ikhlas Kitta Ikhlas Kitta Indar C Gunadin Intan Sari Areni M. Miftach Fakhri Mustafa, Mutiah Nappu, Muhammad Bahtiar Palantei, Elyas Palantei, Idris Pasra, Nurmiati Raden Mohamad Herdian Bhakti Rhiza S. Sadjad Rosmani Rosmani Salama Manjang Sri Mawar Said Sri Mawar Said Suandar Baso Tajuddin Waris Yulis, Nurlina Yusran Yusran Yusri Syam Akil Yustinus Sombolayuk Zaenab Muslimin